Grateful Dead
Save Your Face Shortlist: Midwest Tour, February 1973
By John Hilgart
https://saveyourface.posthaven.com/shortlist-midwest-tour-february-1973
This mix combines performances from The Dead’s 2nd, 3rd, and 4th shows of 1973, in Madison, WI, St. Paul, MN, and Chicago. The result is mighty. "Bertha" starts smoldering around :38 and ignites at 1:20. It doesn't let up after that for more than 100 minutes. Visit the above link for additional details and a download URL.